TWI494746B - Remind circuit after shutting up computer to save energy - Google Patents

電腦關機節能提醒電路Computer shutdown energy saving reminder circuit

本發明係關於一種提醒電路，尤指一種電腦關機節能提醒電路。The invention relates to a reminder circuit, in particular to a computer shutdown energy-saving reminding circuit.

根據高級配置與電源介面（Advanced Configuration and Power Interface, ACPI）規範，電腦電源管理系統可將電腦的工作狀態分為S0到S5，它們代表的含義分別是：According to the Advanced Configuration and Power Interface (ACPI) specification, the computer power management system can divide the working state of the computer into S0 to S5, which mean:

S0：電腦正常工作，所有硬體設計全部處於打開或正常工作的狀態；S0: The computer works normally, and all hardware designs are in the state of being open or working normally;

S1：亦稱為POS（Power on Suspend，CPU停止工作），其他的硬體設備仍然正常工作；S1: Also known as POS (Power on Suspend), other hardware devices still work normally;

S2：將CPU關閉，但其餘的硬體設備仍然運轉；S2: The CPU is turned off, but the remaining hardware devices are still running;

S3：通常稱為STR（Suspend to RAM，掛產生記憶體），將運行中的資料寫入記憶體後關閉硬碟；S3: Usually called STR (Suspend to RAM), the running data is written into the memory and then the hard disk is turned off;

S4：亦稱為STD（Suspend to Disk，掛產生硬碟），記憶體資訊寫入硬碟，然後所有部件停止工作；S4: Also known as STD (Suspend to Disk), the memory information is written to the hard disk, and then all the components stop working;

S5：所有硬體設備（包括電源）全部皆關閉，即電腦處於關機狀態。S5: All hardware devices (including power supplies) are turned off, that is, the computer is turned off.

用戶可透過電腦的電源管理功能表查看電腦的工作模式，當電腦處於S0狀態時，電源處於開啟狀態；在電腦關機後，電源開始轉入S5狀態，此時主機板還接有+5VSB的備用電壓訊號，以作為主機板電源監控電路的工作電源，支援電腦喚醒等功能，因而關機後主機板還在持續消耗電能，造成不必要的浪費。The user can view the working mode of the computer through the power management function table of the computer. When the computer is in the S0 state, the power is turned on; after the computer is turned off, the power supply starts to enter the S5 state, and the motherboard is also connected with the +5VSB standby. The voltage signal is used as the working power supply for the power supply monitoring circuit of the motherboard, and supports functions such as wake-up of the computer. Therefore, the motherboard continues to consume power after shutdown, resulting in unnecessary waste.

鑒於以上內容，有必要提供一種電腦關機節能提醒電路，以在電腦關機後關斷備用電壓來節省電能。In view of the above, it is necessary to provide a computer shutdown energy-saving reminder circuit to save power by turning off the standby voltage after the computer is turned off.

一種電腦關機節能提醒電路，包括一連接器、一發光二極體、一反及閘、一電壓輸出端及一按鍵開關，該按鍵開關包括第一及第二開關，該連接器的開機引腳連接該第一開關的第一端，該第一開關的第二端接地，該連接器的電壓引腳連接該第二開關的第一端，該第二開關的第二端連接該電壓輸出端、該反及閘的電壓端及該反及閘的第一輸入端，該連接器的訊號引腳連接該反及閘的第二輸入端，該反及閘的輸出端連接該發光二極體的陽極，該發光二極體的陰極接地，當該第一及第二開關均閉合時，該反及閘的第一及第二端均接收到高電平訊號，該反及閘的輸出端輸出一低電平訊號，該發光二極體不亮，該電壓輸出端輸出一備用電壓，當該第一開關斷開而該第二開關閉合時，該反及閘的第一輸入端接收一高電平訊號而該反及閘的第二輸入端接收到一低電平訊號，該反及閘的輸出端輸出一高電平訊號，該發光二極體發光，該電壓輸出端不輸出該備用電壓。A computer shutdown energy-saving reminding circuit includes a connector, a light-emitting diode, a reverse gate, a voltage output terminal and a button switch, the button switch includes first and second switches, and the power-on pin of the connector Connecting the first end of the first switch, the second end of the first switch is grounded, the voltage pin of the connector is connected to the first end of the second switch, and the second end of the second switch is connected to the voltage output end a voltage terminal of the gate and a first input end of the gate, a signal pin of the connector is connected to the second input end of the gate, and an output terminal of the gate is connected to the LED An anode, the cathode of the LED is grounded, and when the first and second switches are both closed, the first and second ends of the anti-gate receive a high level signal, and the output of the anti-gate Outputting a low level signal, the light emitting diode is not lit, the voltage output terminal outputs a standby voltage, and when the first switch is turned off and the second switch is closed, the first input end of the back gate receives a a high level signal and the second input of the reverse gate receives a low Level signal, the output terminal of the NAND outputs a high level signal, the light emitting diode to emit light, the voltage output terminal does not output the standby voltage.

相較習知技術，該電腦關機節能提醒電路可在電腦關機後透過該發光二極體的發光來提醒電腦用戶透過該旋轉按鍵開關關斷該電腦主機板上的5V備用電壓，以此達到節能目的。Compared with the prior art, the computer power-off reminding circuit can remind the computer user to turn off the 5V standby voltage on the computer motherboard through the rotary button switch after the computer is turned off, thereby achieving energy saving. purpose.

如圖1所示，本發明電腦關機節能提醒電路100設置在一電腦主機板上，其較佳實施方式包括一連接器10、電容C1及C2、電阻R1-R4、一發光二極體（light emitting diode, LED）D1、一反及閘U1、一電壓輸出端Vout及一旋轉按鍵開關20。在本實施方式中，該旋轉按鍵開關20及該LED D1設置在該電腦前面板上，透過該旋轉按鍵開關20啟動該電腦。該旋轉按鍵開關20是習知技術在此不詳細敍述，其功能是可按下彈起亦可旋轉，當按下此按鍵開關後，會閉合或斷開一開關，如本實施方式中的開關S1，當旋轉到某一指定位置（如啟動位置或關閉位置），則會閉合或斷開另一開關，如本實施方式中的開關S2。As shown in FIG. 1 , the computer shutdown power saving reminder circuit 100 of the present invention is disposed on a computer motherboard. The preferred embodiment includes a connector 10 , capacitors C1 and C2 , resistors R1 - R4 , and a light emitting diode (light ) The emitter diode (LED) D1, the reverse gate U1, a voltage output terminal Vout, and a rotary button switch 20. In the embodiment, the rotary button switch 20 and the LED D1 are disposed on the front panel of the computer, and the computer is activated by the rotary button switch 20. The rotary button switch 20 is not described in detail in the prior art. Its function is that it can be rotated by pressing and popping. When the button switch is pressed, a switch is closed or opened, such as the switch in this embodiment. S1, when rotated to a specified position (such as a start position or a closed position), another switch is closed or opened, such as switch S2 in the present embodiment.

該連接器10的開機引腳PS_ON連接該開關S1的一端，該開關S1的另一端接地，該電容C1串接在該連接器10的開機引腳PS_ON與地之間。該連接器10的電壓引腳P5V_STBY連接該開關S2的一端，該開關S2的另一端連接該電壓輸出端Vout、該反及閘U1的電壓端及經該電阻R3連接該反及閘U1的第一輸入端。該連接器10的訊號引腳PWRGD_PS連接該反及閘U1的第二輸入端，該電容C2串接在該連接器10的訊號引腳PWRGD_PS與地之間，該電阻R1串接在該連接器10的訊號引腳PWRGD_PS與一電壓源VCC之間，該電阻R2串接在該連接器10的訊號引腳PWRGD_PS與地之間。該反及閘U1的輸出端連接該LED D1的陽極，該LED D1的陰極經該電阻R4接地，該反及閘U1的接地端接地。The power-on pin PS_ON of the connector 10 is connected to one end of the switch S1, and the other end of the switch S1 is grounded. The capacitor C1 is connected in series between the power-on pin PS_ON of the connector 10 and the ground. The voltage pin P5V_STBY of the connector 10 is connected to one end of the switch S2, and the other end of the switch S2 is connected to the voltage output terminal Vout, the voltage terminal of the reverse gate U1, and the first connection of the reverse gate U1 via the resistor R3. An input. The signal pin PWRGD_PS of the connector 10 is connected to the second input end of the opposite gate U1. The capacitor C2 is connected in series between the signal pin PWRGD_PS of the connector 10 and the ground. The resistor R1 is connected in series with the connector. Between the signal pin PWRGD_PS of 10 and a voltage source VCC, the resistor R2 is connected in series between the signal pin PWRGD_PS of the connector 10 and the ground. The output end of the anti-gate U1 is connected to the anode of the LED D1, and the cathode of the LED D1 is grounded via the resistor R4, and the ground end of the anti-gate U1 is grounded.

使用時，該連接器10連接該電腦的電源供應器，當該旋轉按鍵開關20旋轉到啟動位置（即閉合開關S2）並按下此按鍵開關20（即閉合開關S1）時，該電源供應器透過該連接器10的引腳PS_ON接收到一低電平的開機訊號，該電腦開機，此時電源供應器透過該連接器10的引腳PWRGD_PS輸出一高電平的power good訊號及透過該連接器10的引腳P5V_STBY輸出一5V備用電壓，該5V備用電壓及該高電平的power good訊號分別提供給該反及閘U1的第一及第二輸入端，該反及閘U1的輸出端輸出一低電平訊號，該LED D1不發光，以指示該電腦處於正常工作狀態，該電壓輸出端Vout輸出5V備用電壓。In use, the connector 10 is connected to the power supply of the computer, and when the rotary button switch 20 is rotated to the starting position (ie, the switch S2 is closed) and the button switch 20 is pressed (ie, the switch S1 is closed), the power supply is provided. Receiving a low-level power-on signal through the pin PS_ON of the connector 10, the computer is powered on, and the power supply device outputs a high-level power good signal through the pin PWRGD_PS of the connector 10 and through the connection. The pin P5V_STBY of the device 10 outputs a 5V standby voltage, and the 5V standby voltage and the power good signal of the high level are respectively supplied to the first and second input ends of the anti-gate U1, and the output end of the anti-gate U1 A low level signal is output, the LED D1 does not emit light to indicate that the computer is in a normal working state, and the voltage output terminal Vout outputs a standby voltage of 5V.

當再次按下此按鍵開關20時，即斷開開關S1而開關S2仍然閉合，該電源供應器透過該連接器10的引腳PS_ON沒有接收到開機訊號而關閉，該電腦關機，該反及閘U1的第二輸入引腳接收到一低電平的power good訊號，因為此時該電源供應器仍然有5V備用電壓輸出，因此該反及閘U1的第一輸入端接收到5V備用電壓，該反及閘U1的輸出端輸出一高電平訊號，該LED D1導通而發光，以指示該電腦處於關機狀態並提醒使用者將該旋轉按鍵開關20旋轉到關閉狀態（即斷開開關S2），從而使該5V備用電壓不會透過該電壓輸出端Vout輸出給該電腦主機板上的電子元件，以此來關閉5V備用電壓來實現節能目的。When the button switch 20 is pressed again, the switch S1 is turned off and the switch S2 is still closed. The power supply is turned off by the pin PS_ON of the connector 10 not receiving the power-on signal, and the computer is turned off. The second input pin of U1 receives a low power good signal, because the power supply still has a 5V standby voltage output, so the first input of the reverse gate U1 receives the 5V standby voltage, The output end of the gate U1 outputs a high level signal, and the LED D1 is turned on to emit light to indicate that the computer is in a shutdown state and reminds the user to rotate the rotary button switch 20 to the off state (ie, the switch S2 is turned off). Therefore, the 5V standby voltage is not output to the electronic components on the computer motherboard through the voltage output terminal Vout, thereby turning off the 5V standby voltage to achieve energy saving purposes.

該電腦關機節能提醒電路100可在電腦關機後透過該發光二極體D1的發光來提醒電腦用戶透過該旋轉按鍵開關20關斷該電腦主機板上的5V備用電壓，以此達到節能目的。The computer power-off reminder circuit 100 can remind the computer user to turn off the 5V standby voltage on the computer motherboard through the rotary button switch 20 after the computer is turned off, thereby achieving energy saving.

綜上所述，本發明符合發明專利要件，爰依法提出專利申請。惟，以上所述者僅為本發明之較佳實施例，舉凡熟悉本案技藝之人士，在爰依本發明精神所作之等效修飾或變化，皆應涵蓋於以下之申請專利範圍內。In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art will be included in the following claims.

100．．．電腦關機節能提醒電路100. . . Computer shutdown energy saving reminder circuit

10．．．連接器10. . . Connector

C1、C2．．．電容C1, C2. . . capacitance

R1-R4．．．電阻R1-R4. . . resistance

U1．．．反及閘U1. . . Reverse gate

D1．．．發光二極體D1. . . Light-emitting diode

20．．．旋轉按鍵開關20. . . Rotary button switch

S1、S2．．．開關S1, S2. . . switch

Vout．．．電壓輸出端Vout. . . Voltage output

VCC．．．電壓源VCC. . . power source

圖1是本發明電腦關機節能提醒電路的較佳實施方式的電路圖。1 is a circuit diagram of a preferred embodiment of a computer shutdown energy saving reminder circuit of the present invention.

100．．．電腦關機節能提醒電路100. . . Computer shutdown energy saving reminder circuit

10．．．連接器10. . . Connector

C1、C2．．．電容C1, C2. . . capacitance

R1-R4．．．電阻R1-R4. . . resistance

U1．．．反及閘U1. . . Reverse gate

D1．．．發光二極體D1. . . Light-emitting diode

20．．．旋轉按鍵開關20. . . Rotary button switch

S1、S2．．．開關S1, S2. . . switch

Vout．．．電壓輸出端Vout. . . Voltage output

VCC．．．電壓源VCC. . . power source